package com.javaBasic;

import java.util.HashMap;

public class HashMapTest {
    public static void main(String[] args) {
        HashMap<Object,Object> map = new HashMap<>();
        map.put("name","张三");
        System.out.println(map.get("name"));
        System.out.println(1+"10"+3+"2");
        System.out.println("更新2");
    }
}
